Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos espectadores assistiram quando o time visitante era Collingwood?
 ###Tabelas: CREATE TABLE international_tourism_expenditure_2012 (international_tourism_expenditure_2012_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Country VARCHAR, UNWTO Region VARCHAR, International tourism expenditure (2012) VARCHAR, International tourism expenditure (2011) VARCHAR) CREATE TABLE round_10 (round_10_id AUTO_INCREMENT PRIMARY KEY, Home team VARCHAR, Home team score VARCHAR, Away team VARCHAR, Away team score VARCHAR, Venue VARCHAR, Crowd INT, Date VARCHAR) CREATE TABLE numbers_from_100–10000000 (numbers_from_100–10000000_id AUTO_INCREMENT PRIMARY KEY, Value VARCHAR, Khmer INT, Word Form VARCHAR, UNGEGN VARCHAR, ALA-LC VARCHAR, Other VARCHAR, Notes VARCHAR) CREATE TABLE passenger_and_express_train_locomotives (passenger_and_express_train_locomotives_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Railway number(s) VARCHAR, DRG number(s) VARCHAR, Quantity INT, Year(s) of manufacture VARCHAR, Axle arrangement VARCHAR) CREATE TABLE national_summary (national_summary_id AUTO_INCREMENT PRIMARY KEY, Nation VARCHAR, Total wins INT, Team wins INT, Individual wins INT, Individual winners INT)  
SELECT Crowd FROM round_10 WHERE Away team = collingwood